build-easy/lib/getBabelConifg.js

library build tool.

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.default = getBabelConfig;

function ownKeys(object, enumerableOnly) { var keys = Object.keys(object); if (Object.getOwnPropertySymbols) { var symbols = Object.getOwnPropertySymbols(object); enumerableOnly && (symbols = symbols.filter(function (sym) { return Object.getOwnPropertyDescriptor(object, sym).enumerable; })), keys.push.apply(keys, symbols); } return keys; }

function _objectSpread(target) { for (var i = 1; i < arguments.length; i++) { var source = null != arguments[i] ? arguments[i] : {}; i % 2 ? ownKeys(Object(source), !0).forEach(function (key) { _defineProperty(target, key, source[key]); }) : Object.getOwnPropertyDescriptors ? Object.defineProperties(target, Object.getOwnPropertyDescriptors(source)) : ownKeys(Object(source)).forEach(function (key) { Object.defineProperty(target, key, Object.getOwnPropertyDescriptor(source, key)); }); } return target; }

function _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }

function getBabelConfig(buildConfig, isBrowser, moduleType) {
  const nodeVersion = buildConfig.nodeVersion,
        runtimeHelpers = buildConfig.runtimeHelpers,
        _buildConfig$babelCon = buildConfig.babelConfigTransform,
        babelConfigTransform = _buildConfig$babelCon === void 0 ? config => config : _buildConfig$babelCon,
        _buildConfig$extraBab = buildConfig.extraBabelPlugins,
        extraBabelPlugins = _buildConfig$extraBab === void 0 ? [] : _buildConfig$extraBab,
        _buildConfig$extraBab2 = buildConfig.extraBabelPresets,
        extraBabelPresets = _buildConfig$extraBab2 === void 0 ? [] : _buildConfig$extraBab2,
        frame = buildConfig.frame;
  const vue = frame === 'vue';
  const react = frame === 'react';
  const defaultEnvConfig = {
    exclude: ['transform-member-expression-literals', 'transform-reserved-words', 'transform-template-literals', 'transform-typeof-symbol', 'transform-unicode-regex', 'transform-sticky-regex', 'transform-new-target', 'transform-modules-umd', 'transform-modules-systemjs', 'transform-modules-amd', 'transform-literals', 'transform-regenerator'].filter(Boolean)
  }; // Setting this to false will preserve ES modules.

  const modules = moduleType === 'esm' ? false : 'cjs';
  const babelConfig = {
    presets: [require.resolve('@build-easy/bundles/model/@babel/preset-typescript'), [require.resolve('@build-easy/bundles/model/@babel/preset-env'), _objectSpread({
      targets: isBrowser ? {
        browsers: ['last 2 versions', 'IE 11']
      } : {
        node: nodeVersion !== null && nodeVersion !== void 0 ? nodeVersion : 6
      },
      modules
    }, defaultEnvConfig)],
    /**
     * @desc Supports react
     */
    isBrowser && react && require.resolve('@build-easy/bundles/model/@babel/preset-react'), ...extraBabelPresets].filter(Boolean),
    plugins: [
    /**
     * @in
     * export default 1
     * @out
     * Object.defineProperty(exports, "__esModule", {
     *  value: true,
     *  });
     *
     * exports.default = 1;
     */
    moduleType === 'cjs' && !isBrowser && [require.resolve('@build-easy/bundles/model/@babel/plugin-transform-modules-commonjs'), {
      lazy: true
    }],
    /**
     * @in
     * export * as v from "mod"
     * @out
     * export v from "mod"
     */
    require.resolve('@build-easy/bundles/model/@babel/plugin-proposal-export-default-from'),
    /**
     * @desc
     * let a = do {
     *  if (x > 10) {
     *   ("big");
     *  } else {
     *   ("small");
     *  }
     * };
     *  // is equivalent to:
     * let a = x > 10 ? "big" : "small";
     */
    require.resolve('@build-easy/bundles/model/@babel/plugin-proposal-do-expressions'),
    /**
     * @desc Supports vue jsx
     */
    isBrowser && vue && require('@build-easy/bundles/model/@vue/babel-plugin-jsx'), runtimeHelpers && [require.resolve('@build-easy/bundles/model/@babel/plugin-transform-runtime'), {
      useESModules: isBrowser && moduleType === 'esm',
      version: require('@babel/runtime/package.json').version
    }], ...extraBabelPlugins].filter(Boolean)
  };
  return babelConfigTransform(babelConfig);
}